基于100db动态范围InGaAs/InAlAs光导体的光纤耦合太赫兹时域光谱系统

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) Pub Date : 2015-11-12 DOI:10.1109/IRMMW-THZ.2015.7327408

R. Dietz, B. Globisch, H. Roehle, T. Gobel, M. Schell

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引用次数: 0

摘要

本文提出了一种工作在1.5 μm波长下具有高动态范围的全光纤耦合太赫兹时域光谱系统。宽带太赫兹辐射是由高迁移率InGaAs/InAlAs异质结构光导发射极产生的。采用低温生长(LTG)掺杂InGaAs/InAlAs异质结构进行检测。探测器和发射器都封装在光纤耦合外壳中。该系统的动态范围超过100db，频谱带宽为6.5 THz。

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Fiber coupled terahertz time domain spectroscopy system based on InGaAs/InAlAs photoconductors with 100 dB dynamic range

We present an all fiber coupled terahertz (THz) time domain spectroscopy (THz-TDS) system operating at 1.5 μm wavelength with very high dynamic range. The broadband THz radiation is generated by a high mobility InGaAs/InAlAs heterostructure photoconductive emitter. For the detection a low temperature grown (LTG) Be-doped InGaAs/InAlAs heterostructure is employed. Both, detector and emitter, are packaged into fiber-coupled housings. The system reaches a dynamic range in excess of 100 dB and a spectral bandwidth of 6.5 THz.

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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

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